John dimelow



@uitrit gratta aztnt ffice.

JOHN DIMELOW, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO HIM.- SELI T.P. STUARD, AND J. STUARD, OF THE SAME PLAGE.

Leiters Paten-t No. 68,716,1datecl iS'epfembei-VIO, 1867.

lIIVIIItOVFD KILN FOR BURNING CLAY PIPES.

TO ALL'WHOM IT MAY CONCERN:

Be it known that I, JOHN DIMELOW, of Philadelphia, Pennsylvania, haveinvented an ImprovedKiln for l Burning Clay Pipes; and I do herebydeclare the following to be a full, clear, and exact description'oi thesame. My invention consists of a kiln constructed substantially asdescribed hereafter, sof that the products of combustion may passboththrough and around the clay pipes placed in the kiln, the said.fpi ,x'es4 being thereby slakcd or' burned more speedily and thoroughly than inordinary kilns. p

4In order to enable others skilled in the art to make and use myinvention, I will now proceed todescribe its construction and operation,reference being had to the accompanying drawing, which `forrnsa part ofthis speciiication, and in which- Figure l is a sectional elevation ofluy-improved kiln` for burning clay pipes.

Figure 2 is a. plan View, and

Figure 3 is a sectional plan on the line 1-2, fig. 1.

iliis the vertical wall of' the kiln, which is circular in shape, and inwhich,`at equal distances from cach other, arearranged the radialfire-places a a communicating with the interior of the kiln. In thedomeshaped top B of the kiln are openings c, to which are fitted coversd; and through the centre of the kiln, and through the top of the same,extends a chimney, C, at the lower end of which are openings c. The baseof the chimney is surrounded by an annular bridge, f, the outer side ofwhich is but a short distance-from the inside of the vertical wall A;and between the chimney and the bridge extends a series of radialperforated ribs, z, on which rest concentric rings z'z' z', arranged atabout equal distances apart between the bridgef and-the chimney`` 4 Thepipes m to be burned are introduced through an opening', fn, into thekiln, and lthere placed upon the rings z' z', as shown in iig. 1, eachpipe resting upon two adjacent rings, and all the pipes being placednear but not in absolute contact with each other. After this theopeningn is closed, and the fuel on thegrates ofthe {ireplaces ignited.The heated gases and products of combustion pass from the fire-placesinto the kiln, and are directed upwards by the bridgef, andthen'pass-downwards through and round the pipes to the openings e, andthrough the latter to the chimney, the heated gases being thus `broughtinto intimate contact with the entire inner and outer surfaces of thepipes, which nre rapidly and thoroughly baked. I

When it is desired to glaze the pipes, common salt is thrown into the{ire-places, whence it is carried, in a volatilized state, by thecurrents, to the pipes, the surfaces of which are thereby vitrified.

When the fires are first kindled the caps are removed from the openingsc, in order that the gases may'pass freely upwards, and carry thesinokcwith them. p

If desired, the rings z'z'may be dispensed with, and the number ofradial ribs i may be increased, so as to afford rests for the pipes; orother suitable supports for the latter may be used.

I claim as my invention, and desire to secure by Letters ,Patent- 1. Akilnhaving fire-places a, a chimney, C, and rings z', or their`quivalents, the whole beingmo arranged that the products of combustion,in their passage from the fireplaces to the chimney, mustpass boththrough and around the pipes m, resting on the said rings, for thepurpose specified.

2. The ribs h h, rings z' z', and bridge f, arranged within a kiln inrespect tuo-the {irc-places and chimney, substantially as and for thepurpose set forth.

In testiniony whereof I have signed my naine to this specification inthepresence of two subscribing witnesses.

JOHN DIMELOW.

Witnesses:

JOHN WHITE, W. J. R. Dumm'.

